Improvement in devices for cooling journals of car-axles



H. "G. THOMPSON;

Car-Axle Box 7 No. 112,510. q Patented March 7, 1371.

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NIPETERS, FROTQ-LQTHOBRAPMER, WASHINGTON- D. C.

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H NRY Home, or IL-FORD; CONNECTICUT.

Letters Patent No. 112,510. dated March 7, 1811.

lMPlQOVEMENTdN DEVICES FO-R COOLING JOURNALS OF CAR-AXL'ES- The Schedule referred to in these Letters Patent ahd of the same.

To al l whont t t may concern;-

. Be it. known that I, HENRY G. THOMPSON, of 'Mil ford, in the oounty of New liaveu and State of Gon-v necticut, have invented and made a new and useful- Improvement inCoolingtheJournals'of Oar-wheel Axles; and the following is declared to beat-correct description of the same. r v This-inventionisau improvement upon that set forth in an applicationfiled by me October .4, 1870.

In said application-tubes are represented as passing iionrthehollow end of lthe journal to the outside of the journal-box, to allow a current ofair to be r a drawn into saidflhollow journal to cool the same and prevent dust enteringinto the chamber containing the lubricating material, and [said tube is provided with couplings or joints, so that the mouth .ot'said tube can be reversed, acoordinglto the direction in which the car is moving. f

. My present improvenient relates to box or. airchamber, to be attached to the front of the journalbox, and provided withopeuings at its ends to allow' air to pass into said box and into the hollow journal by the tube which extends froni said box iuto said I combinewith said openings swinging flaps, hinged upon the insidesofsaid chamber so as to cover said .openingsfandthese flaps, are operated by the air, so that according to thedirection in which the ear is I moving one of the flapswill be raised by theairp'ass ing intothe chamber and theother .closedto prevent the escape of air, except by its passingthrough thetuhular or hollowjournal. A

In connection with theaboveI employ a screen,

"placedbetweenthe openings 'and air-tube whioh allows air to pass freely to. the 'tube,.but prevents the passage of Sandor any material that wouldbe liable to-obstruct the tubeofi the journal.

' In the dra\ving-- Figure l is a vertical longitudinal section of a journal-box fitted with my improvement, and

Figure 2 is a vertical cross-section at'thefliue as as.

.l ig l, it, represents a portion ofaear-wheel axle,

. b is the journal of the same; r

c is the bearing for said journa and d, the box" or chamber for containing the lubricating The journal I) is, provided with the opening or hole in the center thereof, andjwith the lateral' opeuiugs and tubes e e, for the discharge of air by centrifugal itforce drawn iuthrongh the hole 'i. These dischargeopeningsmay be of auydesired character; a

Theitube f, instead of passing to the outside of the ournal-box, as in aforementioned application, is con-* nected with and opens into an air-chamber or box, h, l

the back-plate h of said box 01 forming a capplate to the journal-box d, to prevent the passage of dust or sand to the lubricating material contained therein.

. -I have shown said tube f as screwed ,to said plate It, and extending downward with a bend, so as to enter the opening 4'. in the journal I).

In'the ends in m of the box It I provide openings 'm m, for the passage of air into said box, and these openings are closed by the flaps n a, which are hinged to said ends m m upon the inside of said chamber.

When the car is in motion the force of'the air raises one of the flaps n, and: the air passes freely into the chamber, and the pressure of saidair closes the other flap against its opening and prevents said air escaping except by'the tube f.

Through this tube f the air passes into the opening 4,, and thence away by the tubes or openings 6 e.

The centrifugal action and the force of air entering into; the chamber h conspire to produce a rapid current of air through the journahto convey awa'yffrictional heat and keep said journal at a lowtemperature.

The journals at both ends of the shaft are to be thus fitted. 1

At a I providea screen to prevent sand or other foreign substances passing with the air into the tube f, and this screen may be fitted in slides t t, as shown, so that the same can be removed .fr'om' its place, for cleaning, with facility by simply taking oi? the cover t'- to the chamber h. This screen a is partially removed At c I provide an opening and cover, to allowof the removal of the dust and dirt which may accumulate in the chamber h.

By the use of tlieair-chamber, with the openings and flaps to the same, I aiu able to dispense with the coupling or joint tothe tube f, andconsequently avoid in combination with the axle a I), having the opening passing from its end beyond the journal, and pro vided with lateral discharge-tubes, as specified.

. 2. The screen a and stopperiw, in combination with the air-chamber h, flaps n, axle a b, and openings m3 m substantially as and for the purposes specified.

Signed by me this 18th. day of October, A. D. 1870.

. v HENRY G. THOMPSON. Y

\Vitnesses:

, CHAS. H. SMITH,

GEO. T. Pmomvnx. 

